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Class 7 Maths Worksheet: Lines and Angles

Maths worksheets lesson 52: Lines and angles · Set 307 · 40 sums
TalentJR

The method (90, 180, equal): Complement of a = 90 − a. Supplement of a = 180 − a. Lines crossing: vertically opposite angles are equal; a linear pair adds up to 180°. Parallel lines: corresponding angles equal, alternate interior angles equal, interior angles on the same side add up to 180°. One angle d° more than the other: bigger = (total + d) ÷ 2.

NameDateTime takenScore ___ / 40
  1. 1.Two straight lines cross each other. One of the angles formed is 125°. What is the angle next to it on the same line (in degrees)?
  2. 2.Two straight lines cross each other. One of the angles formed is 23°. What is the angle vertically opposite to it (in degrees)?
  3. 3.Two straight lines cross each other. One of the angles formed is 109°. What is the angle vertically opposite to it (in degrees)?
  4. 4.Are 69° and 21° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  5. 5.What is the complement of 58° (in degrees)?
  6. 6.Two straight lines cross each other. One of the angles formed is 22°. What is the angle next to it on the same line (in degrees)?
  7. 7.Two parallel lines are cut by a transversal. One interior angle is 101°. What is its other interior angle on the same side of the transversal (in degrees)?
  8. 8.What is the complement of 38° (in degrees)?
  9. 9.What is the supplement of 148° (in degrees)?
  10. 10.Two angles are supplementary. One is 96° more than the other. What is the bigger angle (in degrees)?
  11. 11.Two straight lines cross each other. One of the angles formed is 75°. What is the angle next to it on the same line (in degrees)?
  12. 12.Are 38° and 142° complementary, supplementary or neither? (a) Neither (b) Supplementary (c) Complementary
  13. 13.Two straight lines cross each other. One of the angles formed is 105°. What is the angle vertically opposite to it (in degrees)?
  14. 14.Two straight lines cross each other. One of the angles formed is 38°. What is the angle vertically opposite to it (in degrees)?
  15. 15.What is the complement of 32° (in degrees)?
  16. 16.Are 37° and 53° complementary, supplementary or neither? (a) Neither (b) Complementary (c) Supplementary
  17. 17.Are 36° and 114° complementary, supplementary or neither? (a) Supplementary (b) Neither (c) Complementary
  18. 18.What is the complement of 57° (in degrees)?
  19. 19.Two straight lines cross each other. One of the angles formed is 83°. What is the angle vertically opposite to it (in degrees)?
  20. 20.What is the complement of 16° (in degrees)?
  21. 21.What is the complement of 33° (in degrees)?
  22. 22.Two angles are supplementary. One is 54° more than the other. What is the bigger angle (in degrees)?
  23. 23.What is the complement of 67° (in degrees)?
  24. 24.What is the complement of 39° (in degrees)?
  25. 25.Are 64° and 116° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  26. 26.What is the supplement of 40° (in degrees)?
  27. 27.What is the complement of 6° (in degrees)?
  28. 28.Two straight lines cross each other. One of the angles formed is 34°. What is the angle next to it on the same line (in degrees)?
  29. 29.What is the supplement of 114° (in degrees)?
  30. 30.What is the supplement of 104° (in degrees)?
  31. 31.Two angles are supplementary. One is 104° more than the other. What is the bigger angle (in degrees)?
  32. 32.Two parallel lines are cut by a transversal. One angle is 82°. What is its corresponding angle (in degrees)?
  33. 33.Two angles are complementary. One is 56° more than the other. What is the bigger angle (in degrees)?
  34. 34.What is the supplement of 161° (in degrees)?
  35. 35.Are 30° and 150° complementary, supplementary or neither? (a) Complementary (b) Supplementary (c) Neither
  36. 36.Two straight lines cross each other. One of the angles formed is 29°. What is the angle next to it on the same line (in degrees)?
  37. 37.What is the complement of 37° (in degrees)?
  38. 38.Two straight lines cross each other. One of the angles formed is 158°. What is the angle vertically opposite to it (in degrees)?
  39. 39.Are 41° and 16° complementary, supplementary or neither? (a) Complementary (b) Neither (c) Supplementary
  40. 40.What is the complement of 13° (in degrees)?

Answer key

  1. 55
  2. 23
  3. 109
  4. Complementary
  5. 32
  6. 158
  7. 79
  8. 52
  9. 32
  10. 138
  11. 105
  12. Supplementary
  13. 105
  14. 38
  15. 58
  16. Complementary
  17. Neither
  18. 33
  19. 83
  20. 74
  21. 57
  22. 117
  23. 23
  24. 51
  25. Supplementary
  26. 140
  27. 84
  28. 146
  29. 66
  30. 76
  31. 142
  32. 82
  33. 73
  34. 19
  35. Supplementary
  36. 151
  37. 53
  38. 158
  39. Neither
  40. 77

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